| 1 | /* |
| 2 | * IRQ splitter device. |
| 3 | * |
| 4 | * Copyright (c) 2018 Linaro Limited. |
| 5 | * Written by Peter Maydell |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 8 | * of this software and associated documentation files (the "Software"), to deal |
| 9 | * in the Software without restriction, including without limitation the rights |
| 10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 11 | * copies of the Software, and to permit persons to whom the Software is |
| 12 | * furnished to do so, subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice shall be included in |
| 15 | * all copies or substantial portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 23 | * THE SOFTWARE. |
| 24 | */ |
| 25 | |
| 26 | /* This is a simple device which has one GPIO input line and multiple |
| 27 | * GPIO output lines. Any change on the input line is forwarded to all |
| 28 | * of the outputs. |
| 29 | * |
| 30 | * QEMU interface: |
| 31 | * + one unnamed GPIO input: the input line |
| 32 | * + N unnamed GPIO outputs: the output lines |
| 33 | * + QOM property "num-lines": sets the number of output lines |
| 34 | */ |
| 35 | #ifndef HW_SPLIT_IRQ_H |
| 36 | #define HW_SPLIT_IRQ_H |
| 37 | |
| 38 | #include "hw/core/sysbus.h" |
| 39 | #include "qom/object.h" |
| 40 | |
| 41 | #define TYPE_SPLIT_IRQ "split-irq" |
| 42 | |
| 43 | #define MAX_SPLIT_LINES 16 |
| 44 | |
| 45 | |
| 46 | OBJECT_DECLARE_SIMPLE_TYPE(SplitIRQ, SPLIT_IRQ) |
| 47 | |
| 48 | struct SplitIRQ { |
| 49 | DeviceState parent_obj; |
| 50 | |
| 51 | qemu_irq out_irq[MAX_SPLIT_LINES]; |
| 52 | uint16_t num_lines; |
| 53 | }; |
| 54 | |
| 55 | #endif |